2021-11-23 12:52:07 -07:00
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---
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name: Language Change Proposals
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about: Changes to the language
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title: "proposal: Go 2: "
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2023-07-30 02:46:55 -06:00
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labels:
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- Proposal
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- v2
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- LanguageChange
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2021-11-23 12:52:07 -07:00
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---
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<!--
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Our process for evaluating language changes can be found here:
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https://go.googlesource.com/proposal/+/refs/heads/master#language-changes
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-->
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### Author background
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- **Would you consider yourself a novice, intermediate, or experienced Go programmer?**
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- **What other languages do you have experience with?**
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### Related proposals
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- **Has this idea, or one like it, been proposed before?**
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- **If so, how does this proposal differ?**
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- **Does this affect error handling?**
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- **If so, how does this differ from previous error handling proposals?**
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- **Is this about generics?**
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- **If so, how does this relate to the accepted design and other generics proposals?**
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### Proposal
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- **What is the proposed change?**
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- **Who does this proposal help, and why?**
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- **Please describe as precisely as possible the change to the language.**
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- **What would change in the language spec?**
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- **Please also describe the change informally, as in a class teaching Go.**
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- **Is this change backward compatible?**
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- Breaking the Go 1 compatibility guarantee is a large cost and requires a large benefit.
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Show example code before and after the change.
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- **Before**
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- **After**
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- **Orthogonality: how does this change interact or overlap with existing features?**
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- **Is the goal of this change a performance improvement?**
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- **If so, what quantifiable improvement should we expect?**
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- **How would we measure it?**
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### Costs
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- **Would this change make Go easier or harder to learn, and why?**
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- **What is the cost of this proposal? (Every language change has a cost).**
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- **How many tools (such as vet, gopls, gofmt, goimports, etc.) would be affected?**
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- **What is the compile time cost?**
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- **What is the run time cost?**
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- **Can you describe a possible implementation?**
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- **Do you have a prototype? (This is not required.)**
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